Angle between the trajectory of a particle as it leaves a surface and the local or average surface plane.
Notes: - The particular surface plane needs to be specified.
- The take-off angle is the complement of the angle of emission.
- In the past, ‘take-off angle’ has sometimes been used erroneously to mean angle of emission.
Source:
PAC, 2020, 92, 1781. 'Glossary of methods and terms used in surface chemical analysis (IUPAC Recommendations 2020)' on page 1817 (https://doi.org/10.1515/pac-2019-0404)